Ceramium ferrugineum (Roth) C.Agardh, 1811 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Ectocarpales family Acinetosporaceae genus Pylaiella species Pylaiella littoralis Name Homonyms Ceramium ferrugineum (Roth) C.Agardh, 1811